Table 4 The correlation coefficients among variables representing the domain-specific early mathematics, the number-specific EFs, and the mathematical abilities for the overall pooled children for 6- (lower diagonal) and 7- (upper diagonal) year-old children (ns = 238 and 267)
Variable | Dot-Dot comparison test | Dot-Number comparison test | Number comparison test | Mental number line | Numerical Stroop test | Numerical shifting test | Number sets test | Numerical operation test |
|---|---|---|---|---|---|---|---|---|
The domain-specific early mathematics | ||||||||
Dot-Dot comparison test |  | .35** | .47** | − .20** | .49** | .25** | .34** | .29** |
Dot-Number comparison test | .74** |  | .63** | − .22** | .37** | .44** | .37** | .28** |
Number comparison test | .68** | .69** |  | − .35** | .63** | .50** | .54** | .51** |
Mental number line | − .22** | − .29** | − .36** |  | − .30** | − .20** | − .44** | − .44** |
The number-specific EF | ||||||||
Numerical Stroop test | .65** | .66** | .65** | − .23** |  | .42** | .40** | .35** |
Numerical shifting test | .51** | .45** | .55** | − .18** | .61** |  | .36** | .29** |
Mathematics ability | ||||||||
Number sets test | .44** | .49** | .51** | − .30** | .44** | .49** |  | .43** |
Numerical operation test | .43** | .44** | .51** | − .31** | .39** | .34** | .49** |  |